Polyimide film with metal salt coating resulting in improved...

Details Polyimide film with metal salt coating resulting in improved... Polyimide film with metal salt coating resulting in improved...

B - Operations, Transporting

32

B

B32B 27/34 (2006.01) B32B 15/08 (2006.01) C08J 7/06 (2006.01) H05K 3/38 (2006.01)

Patent

CA 2051775

17 PE-0113 TITLE POLYIMIDE FILM WITH METAL SALT COATING RESULTING IN IMPROVED ADHESION ABSTRACT OF THE DISCLOSURE A polyimide film is describerd having improved adhesion prepared by coating the surface of a partially cured or partially dried polyamide acid film with an organic solvent solution of a metal salt and heating the coated film to both convert the polyamide acid to polyimide and dry the film. By proper selection of the metal salt either a one-side adherable or two-side adherable polyimide film can be obtained. The polyimide film can be used in electrical insulating and flexible printed circuit applications where superior adhesion is an important requirement. 17

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